/******************************************************************************
 * This program simply writes characters from the alphabet to a file.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

#undef NDEBUG

#include "Utils.hpp"
#include <clocale>
#include <codecvt>
#include <fstream>
#include <iostream>
#include <string>

std::locale utf8loc(std::locale(), new std::codecvt_utf8<wchar_t>);
using namespace Utils;
using namespace std;

void write_text_file(wstring filespec) {
	wofstream ofh(filesystem::path(filespec).c_str());
	if (!ofh.good()) {
		throw ios_base::failure(Utils::wchar_to_UTF8(L"Problem opening output file!"));
	}
	ofh.imbue(utf8loc);
// Latin alphabet
	for (int c = 0x41; c <= 0x5A; ++c) {
		ofh.put(c);
	}
	ofh.put(L'\n');
// Greek alphabet
	for (int c = 0x391; c <= 0x3A9; ++c) {
		ofh.put(c);
	}
	ofh.put(L'\n');
// Cyrillic alphabet
	for (int c = 0x410; c <= 0x42F; ++c) {
		ofh.put(c);
	}
	ofh.put(L'\n');
// Katakana alphabet
	for (int c = 0x30A0; c <= 0x30FF; ++c) {
		ofh.put(c);
	}
	ofh.put(L'\n');
	ofh.flush();
	ofh.close();
}

int main(int argc, char **argv) {
	setlocale(LC_ALL, "en_US.UTF-8");
	wcout.imbue(utf8loc);
	wcin.imbue(utf8loc);

	if (argc != 2) {
		wcout << L"Syntax: " << Utils::UTF8_to_wstring(argv[0]) << L" {filename}" << endl;
		exit(1);
	}
	wstring const FILESPEC = Utils::UTF8_to_wstring(argv[1]);
	try {
		write_text_file(FILESPEC);
	} catch (ios_base::failure ex) {
		wcout << L"Error: " << Utils::exceptionMessage<wchar_t>(ex) << endl;
	} catch (...) {
		wcout << L"Unexpected File Read Error" << endl;
	}
	return 0;
}